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GB/T 7731.1-2021 Active
GB/T 7731.1-2021 Ferrotungsten—Determination of tungsten content—Cinchonine gravimetric method and ammonium nitrate gravimetric method
Abstract
This document specifies the determination of tungsten content in tungsten iron by the Xianke Ning weight method and the ammonium nitrate weight method.
This document is applicable to the determination of tungsten content in tungsten iron. The determination range (mass fraction): 50.00%～90.00%.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 7731.1-2021 |
| CCS | Analysis methods for steel and iron alloys |
| ICS | Iron alloy |
| Implement Date | 2022-03-01 |
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